Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Analog armature control
Reexamination Certificate
2006-10-17
2006-10-17
Ro, Bentsu (Department: 2837)
Electricity: motor control systems
Open loop speed control system for dc motor with commutator
Analog armature control
C388S837000
Reexamination Certificate
active
07123821
ABSTRACT:
A DC motor includes a power source, a stator and a rotor. Permanent magnets are mounted to either the stator or the rotor. Electromagnets are mounted to the other of either the stator or the rotor. Each electromagnet includes two coils which are each branched with a capacitor. A switching means, responding to the rotor, switches between a first mode in which the power supply is connected across a branch for energizing the coil and charging the capacitor and a second mode in which the branch terminals are closed for discharging the capacitor into the coil. The switching means and branches are arranged such that the coils of a particular electromagnet maintain the same polarity while also alternating between opposite polarities.
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Blinn Robert O.
Ro Bentsu
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